Unreal Engine Issues
Unreal Engine Issues
Combo box does not function in packaged build
UE - Editor - UI Systems - May 10, 2017The ComboBox (string) element for UMG is not correctly displaying, The array options do not appear and can not be selected, for the packaged build, while PIE behaves as expected. Regression: This ...
Crash attempting to force delete a duplicate skeletal mesh while in Paint Mode
OLD - Anim - May 17, 2017The editor crashes when you Force Delete the vertex painted asset in the viewport from the content browser. This was not a feature in 4.15 therefore not a regression This also happens in 4.17 - f ...
Keying the Spawned Property of a Spawnable Breaks in the details panel
UE - Anim - Sequencer - May 18, 2017The spawnable mesh seems to be breaking when their spawned property is altered. If you uncheck the spawned property in Sequencer, the Details panel also breaks similar to keying the property. This ...
Class viewer does not save filters when closed
Tools - Jun 16, 2017Regardless how the filters are set in the Class Viewer window, closing and reopening the window causes the filters to be reset to the default options. Regression: No - this behavior exists in 4.15. ...
Setting Sky Distance Threshold to 0 in a Skylight does not disable the light
UE - Graphics Features - Jul 11, 2017When setting the Sky Distance Threshold to 0, the skylight in the level appears to make the level brighter instead of disabling the added light. This does occur in 4.16.2 and 4.15.3 ...
Animation Track in Shot Does Not Animate With Evaluate Sub Sequences In Isolation Enabled
UE - Anim - Sequencer - May 15, 2018When Evaluate Sub Sequences in Isolation is enabled in a shot, other shots inside the same sequences only play the transform track and do not play their animation track Does not affect 4.18.3 Relat ...
Disabling "Apply Fogging" Doesn't Work for Translucent Material with Volumetric Fog
UE - Graphics Features - Jul 6, 2018Translucent materials with "Apply fogging" disabled will be affected by volumetric fog. Found in 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, and 4.21 ...
Default Values missing from Local Variables in Blueprint Actor Construction Script
UE - Gameplay - Sep 19, 2019Specific to the Blueprint Construction Script, Local Variables cannot have their value set in the Editor, because the "Default Value" section of the Details tab will never appear. This only affects ...
DX12/SM6 Sampler Counts increased for empty materials between 5.1 and 5.2
UE - Rendering - Architecture - Materials - May 19, 2023While not a major issue in and of itself, this can cause considerable headaches for materials where sampler counts in 5.1 were at 15/16 or 16/16 and when upgrading to 5.2 are now exceeding the built ...
Toggling Material Layer visibility in Parent Material doesn't propagate to children
UE - Rendering - Architecture - Materials - Jun 9, 2026When Material layer visibility is toggled on the Parent Material in a Material hierarchy, only the Parent’s layer visibility is affected, the children are not. Saving the Parent material has no effe ...